As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, CREW REPORTED GREY & WHITE SMOKE WITH HYD ODOR COMING OUT OF COCKPIT PUNKA LOUVERS SHORTLY AFTER SWITCHING FROM APU BLEED AIR TO MAIN BLEED AIR. CHECK LIST FOLLOWED, EMERGENCY DECLARED & UNSCHEDULED LANDING PERFORMED WITHOUT INCIDENT. EVALUATION FOUND HYD FLUID CONTAMINATION IN RT BLEED AIR SYS. RT BLEED AIR NON-RETURN VLV PN HTE4853 & HYD RESERVOIR BLEED AIR CHECK VLV PN HTE4350 WERE BOTH REPLACED. OTHER BLEED AIR COMPONENTS WERE REPLACED & CLEANED AS NECESSARY.